This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An electric car is designed to run off a bank of 12-V batteries with total energy storage of 6.0 ... (Read 102 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
on: Jul 28, 2018
An electric car is designed to run off a bank of 12-V batteries with total energy storage of 6.0  107 J. If the electric motor draws 6000 W in moving the car at a steady speed of 10 m/s, how far will the car go before it is out of juice?
 a. 150 km
  c. 100 km
  b. 50 km
  d. 25 km

Question 2

A figure skater on ice with arms extended, spins at a rate of 3.5 rev/s. After he draws his arms in, he spins at 6.0 rev/s. By what factor does the skater's kinetic energy change when he draws his arms in?
 a. 2.4
  c. 0.58
  b. 1.7
  d. 0.12


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

SeanoH09

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


crobinson2013

  • Member
  • Posts: 535
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

rleezy04

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Thyroid conditions may make getting pregnant impossible.

The energy input and output of glycolysis. The energy input and output of glycolysis.
The Geometry of a Total Solar Eclipse The Geometry of a Total Solar Eclipse
A cutaway view of a typical two-stage turbine electric fuel pump. A cutaway view of a typical two-stage turbine electric fuel pump.
Energy Transfer Processes: Forced Convection Energy Transfer Processes: Forced Convection
U.S. Energy Consumption U.S. Energy Consumption
The total weight of Peter, David and Henry is 123 kg, Peter is 15 kg heavier than David. David ... The total weight of Peter, David and Henry is 123 kg, Peter is 15 kg heavier than David. David ...
Video: Gas exchange - partial pressure, locations, external and internal respiration

For a complete list of videos, visit our video library